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Question
Linda is conducting a federally-funded research project that examines literacy skills in middle school learners. Bonnie recently started a new that specifically focuses on reading strategies. Some of the students are participating in both studies.a. This is of no concern because there are two different studies.
b. This is a mostly a threat to internal validity.
c. This is mostly a threat to external validity.
d. This is an example of the placebo effect.
Answer
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